Can using this: http://www.ebay.ca/itm/USB-6-Channel-5-1-Audio-External-Optical-Sound-Card-Adapter-For-PC-Laptop-Skype-/140960550644?pt=US_Sound_Card_External&hash=item20d1e74ef4 and three of these: http://www.ebay.ca/itm/New-1PCS-3-5mm-Male-to-2-RCA-Audio-Stereo-Speaker-Laptop-PC-IN-Cable-for-TV-VCR-/111259441656?pt=US_Audio_Cables_Adapters&hash=item19e79459f8 allow me to connect my laptop to my home theater system which only has rca input for 5.1?